A synthesis of 3-amino-4-hydroxyquinolin-2(1H)-one derivatives via oxazolo[4,5-c]quinolin-4(5H)-ones.
作者:MAMORU SUZUKI、KAZUO MATSUMOTO、MUNEJI MIYOSHI、NAOTO YONEDA、RYUICHI ISHIDA
DOI:10.1248/cpb.25.2602
日期:——
3-Amino-4-hydroxyquinolin-2 (1H)-one compounds (aminocarbostyrils) were synthesized by a reaction of methyl isocyanoacetate with isatoic anhydrides in the presence of 1, 8-diazabicyclo [5, 4, 0] undec-7-ene (DBU), followed by hydrolysis with HCl. The alkylation of oxazolo [4, 5-c] quinolin-4 (5H)-ones which are the intermediates of the aminocarbostyrils and the acylation of aminocarbostyrils were also investigated. Furthermore, a variety of the quinolin-2 (1H)-one analogs showed antiallergic activity.
在 1, 8-二氮杂双环 [5, 4, 0] 十一-7-烯 (DBU) 存在下,通过异氰基乙酸甲酯与异酸酐反应,然后用盐酸水解,合成了 3-氨基-4-羟基喹啉-2 (1H) -酮化合物(氨基卡波胆碱)。此外,还研究了恶唑并 [4, 5-c] 喹啉-4 (5H)- 酮(氨基卡波胆碱的中间体)的烷基化以及氨基卡波胆碱的酰化。此外,多种喹啉-2 (1H)-酮类似物显示出抗过敏活性。